The variation in seismic P to P reflection amplitude with offset (AVO) caused by a system of fractures embedded in an isotropic background is investigated. Additionally. a sensitivity analysis of AVO parameters with respect to the fracture system parameters is made. The fracture system is assumed to be aligned vertically or horizontally and can be gas filled or fluid filled. Elastic constants a...

Oil and gas production from tight, fractured reservoirs (sandstone, carbonates and shale) has increased significantly over the last decade. These hard rock targets are often characterized by vertically aligned fractures (i.e. HTI) embedded in a layered sequence (i.e. VTI). In this geologic setting, seismic velocities and η can vary with azimuth and depth. This is orthorhombic anisotropy and can...

Regarding absorption spectrum, high corresponds to low light transmittance and relatively loud noise, whereas information content, which interferes with the modeling of spectral analysis. Appropriate absorbance level is necessary improve content reduces noise level. In this study, based on selection upper lower bounds absorbance, value optimization partial least squares (AVO-PLS) method was pro...

We apply three moveout-based methods for multiple suppression to simple synthetic common midpoint (CMP) gathers and compare their performance in terms of level of multiple rejection and, more importantly, in terms of (1) suitability of processed output for use in analysis of amplitude variations with offset (AVO), (2) primary-to-multiple amplitude (p/m) ratio of the data after CMP stacking, and...

Nowadays there is a clear trend towards using methods and tools that can develop multi-agent systems (MAS) capable of performing dynamic selforganization when they detect changes in the environment. Moreover, the ideas that model the interactions of a multi-agent system cannot be related only to the agents and their communication skills in gaining strength, but it is necessary to use the concep...

RÉSUMÉ. Le transport de contenus multimédia codés au standard MPEG-4 sur Internet est soumis à des contraintes de débit, de délai et de fiabilité. La charge et la nature du trafic sur le réseau ont des effets sur les pertes et les délais d’acheminement des paquets qui doivent être contrôlés. Dans cet article, nous proposons une technique de protection des objets audiovisuels (AVO) adaptée aux c...

Reflection energy from a linear reflector comes from an integrant over an aperture often described by the Fresnel zone. Within the Fresnel zone, the diffraction energy constructively builds the reflection energy. This paper uses diffraction theory to explain the reflector edge effect on amplitude and the amplitude variation within the Fresnel zone. Thus, discuss the Fresnel zone effect for AVO ...